#sow_thistle__sowthistle__milk_thistle  any of several Old World coarse prickly-leaved shrubs and subshrubs having milky juice and yellow flowers; widely naturalized; often noxious weeds in cultivated soil
  supertype:  shrub__bush  a low woody perennial plant usually having several major branches
  member of:  genus_Sonchus
  subtype:  Sonchus_oleraceus__milkweed  annual Eurasian sow thistle with soft spiny leaves and rayed yellow flower heads

No statement uses or specializes sow_thistle; click here to add one.